ASTROSAT CZTI

Data Quality Report

Orbit 45979

Creation date: 2024-06-27T23:18:24.599016
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_017T01_9000006148_45979cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45979cztM0_level2_quad_clean.evt
Size (bytes)222,036,48028,448,640
Size211.8 MB 27.1 MB
Events in quadrant A4,071,73196,101
Events in quadrant B1,941,193192,092
Events in quadrant C873,219224,195
Events in quadrant D1,173,994202,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134890
B072240
C040420
D048262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2012128864.015905%
B201236418.091451%
C201310.049677%
D2012251.242545%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 2011 2011 1103 1103 54.85% 54.85%
B 2012 2012 327 327 16.25% 16.25%
C 2013 2013 0 0 0.00% 0.00%
D 2012 2012 31 31 1.54% 1.54%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 223 2951359 92414.04 145 142 31.9
A 10 83 553568 17329.91 145 142 31.9
A 13 254 2178 63.76 145 142 31.9
B 3 112 1148287 28757.34 197 191 39.9
B 5 255 7718 188.54 197 191 39.9
B 5 171 6326 153.67 197 191 39.9
C 11 16 4061 71.18 223 224 53.9
C 13 61 1406 21.93 223 224 53.9
C 3 233 1403 21.87 223 224 53.9
D 1 52 261876 4640.75 217 211 56.4
D 13 249 21656 380.34 217 211 56.4
D 2 249 14279 249.5 217 211 56.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter